Year	% of total population
1960	11.096595823620259
1961	11.421260632213507
1962	11.755180648883405
1963	12.1043999071502
1964	12.492398343148068
1965	12.88764390525009
1966	13.291748895234099
1967	13.702247092272604
1968	14.119931916379347
1969	14.543729810469294
1970	14.97954610807492
1971	15.342423878857137
1972	15.395043450669219
1973	15.4494628080844
1974	15.479788286266377
1975	15.515592338793075
1976	15.557833981463324
1977	15.606974080850897
1978	15.67793197091043
1979	15.782324734600978
1980	15.883890971144387
1981	15.971055364885059
1982	16.072311224872603
1983	16.19297496798815
1984	16.33873551810164
1985	16.50006351258054
1986	16.671058305298235
1987	16.85084954495323
1988	17.032071328351957
1989	17.20450704416354
1990	17.379831686306417
1991	17.561988579916896
1992	17.754607230078253
1993	17.95824718685114
1994	18.177572720236267
1995	18.31863630308715
1996	18.064263689297068
1997	17.844582944066968
1998	17.65047385171569
1999	17.474125117478085
2000	17.310200494922924
2001	17.16365311421817
2002	17.03221102999312
2003	16.9113754451855
2004	16.796742355450192
2005	16.686997839285837
2006	16.789018648196112
2007	16.88720351289614
2008	16.98177695761272
2009	17.071644925284705
2010	16.93937941853233
2011	16.806833695887946
2012	16.675601643416655
2013	16.546679001251597
2014	16.42098895158968
2015	16.297992029337323
2016	16.177554902895263
2017	16.059607451980796
2018	15.944702508264694
2019	15.838595998393739
2020	15.744738483946241
2021	15.660838415657743
2022	15.587692807199133
2023	15.533094626833051